Just a little while back, Fanjita wrote a small article on what the people with non-homebrew-able PSPs should do. In my opinion, waiting for an exploit was the most sensible thing to do. And boy, you guys didn't have to wait very long! The Noobz team has just come out with an exploit that works on all firmwares up to 3.03, which is the latest firmware Sony has been able to come up with! This means that every firmware available currently is hackable and hopefully, downgradeable soon!
As of now, the only homebrew that runs through the exploit is a simple Hello World proof of concept, but we all know what the PSP scene can come up with in a very short while. And that's exactly what's gonna happen since Fanjita himself said that a 3.03 Downgrader will be coming soon!
Here's what Fanjita had to say:
You remember that the only thing holding us back from a downgrader for v3.03 was the lack of a user-mode exploit?
Well, we don't like to be held back from anything, so we went back to basics and looked over some of the old exploits. And what do you know? We found one! We did a little digging into the old GTA exploit, and discovered that it hadn't been properly patched after all.
We'll leave it as an exercise for the interested reader to figure out exactly how we got past the patch (and to give Sony a little while longer before the head-slapping "Doh!" moment :P)
I did have a talk with Fanjita and what surprised me the most was that "the only reason it took so long to find is that no-one thought they'd fix it so *badly*"! The most important question right now would be the availability kernel mode, and in Fanjita's own words, "It's a bit tricky, but yes, the kernel mode hole found by Team C+D still works from the Goofy exploit." The downgrader will use this to perform its magic.
The only catch is that you need an unpatched GTA:LCS UMD. Yes GTA Liberty City Stories, NOT Vice City Stories! The new UMDs being sold in shops are already patched, so you'll be better off finding a used one or asking your friends if they have one.
Here's the usage instructions:
* You need an original, unpatched GTA:LCS game. The new copies that you find in the shops now will not work.
* This only works for Liberty City Stories, not Vice City Stories.
* Extract the files from the ZIP into the /PSP/SAVEDATA folder on your memory stick.
* Start the GTA game, and enjoy the feeling of freshly-minted homebrew